This doesn’t mean go out and buy a fancy new set of dinner plates. Rather, start using your salad plates as your dinner plates. Using a smaller plate helps you get used to eating smaller portions. “People will start to really identify with good, healthy portion sizes and will feel very full after they finish a meal on a smaller plate,” Kirkpatrick says. Interesting note: If you own a home built in the 1940s or 1950s, chances are good dinner plates sold today won’t even fit into your older cupboards. Today’s dinner plates average 11 to 12 inches across. Back in the day, dinner plates were only 7 to 9 inches across–the same as today’s salad plate.